Improvement in boat-hoisting, lowering, and detaching apparatus



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No, 119,984. y Patmedocmmsn.

UNITED STATE PATET OFFICEv JOSEPH HUMPHRIES, OF WASHINGTON, DISTRICT OFCOLUMBIA.

IMPROVEMENT IN BOAT-HUISTING, LWERING, AND DETACHING APPARATUS.

Specification forming part of Letters Patent No. 119,984, dated October17, 1871 antedated October 10, 1871.

To all whom it may concern:

Be it known that l, JOSEPH HUMPHRrEs, of

the city and county of Washington, in the District of Columbia, haveinvented certain iinprovements whereby a boat may be hoisted up, lowereddown, and detached from a ships side without danger of swamping ordestroying the boat.

The rst part of my invention relates to spurdavits or shores to conducta boat clear from a ships side when being hoisted up or lowered down.The second part of my invention relates to the combination of four (4)bolts, two (2) triggers, and two (2) rods, and one (1) beam, for thepurpose of detaching a boat from the tackles when she is lowered down.By this combination one man can detach both ends of the boat at the sametime.

A is the ships side. B B are the davits on which the boat is suspended.C C are the spurdavits or shores, of which one end is connected to theships side or to the lower part of the davits B B, so as to move up anddown if required, the other end of the spur davits or shores O O to beconnected to the tackle-block D D, 011 which the boat E is attached. Theobject of these spur-davits or shores is to conduct a boat clear of theships side when being hoisted up or lowered. E is the boat. F is thethwarts or seat in the boat. Y G is the keel of the boat. H H are theeyebolts, to which the triggers I I are connected by means of two eyes,one in the other 5 one of these bolts is xed in the forward part of theboat D, passing through the forward thwart or seat F a little on oneside of the center or middle of the boat E, and down through the keel Gand secured on the outside of the keel G; the

other eyebolt H and trigger I are constructed the same as the above.This eyebolt H and trigger I are fixed in the heel G in the after-end ofthe boat E. Down below the triggers I have a bend up in the middle so asto give room to hook on the tackle-block D D. K K is a bolt with twoprongs on the upper part with a hole through them. These prongs are openwide enough to receive the triggers I I loosely. These bolts K K are tobe fixed one in the forward thwart or seat F and the other in theafter-part of the boat E through the keel G a little from the center,opposite to bolts H H, near enough for the trigger I to fall between theprongs. J J are the rods that conline the triggers I I between theprongs of bolts K K; one of these rods is connected to the top of thebeam L on the forward part, and running along under the thwarts or seatsF to the beam L, and through the holes in bolts K K, and over the end ofthe trigger I, thus confining the triggers I I 5 the other rod J isconnected to the lower end of the beam L and runs along on the keel G tothe bolt K in the after-part of the boat E, through the holes in thebolt K, over the trigger I`the same as the one in the forward part ofthe boat E. L is the beam that gives motion to the rods J J. This beamhas a socket in the upper end large enough to admit a lever two feetlong or thereabouts. In the center of this beam there is a hole.Connected to a small frame, M, is the frame to which the beam L isconnected. This frame M is secured to the bottom of the boat E or to theafter thwart or seat F.

I claim as my inventionl. In combination with the davits B thesupplemental davits or shores G wherebyaboat may be lowered and heldaway from the ships side, as set forth.

2. The combination of eyebolts H H and K K with triggers I I and rods JJ, as described in the annexed specification and drawing.

JOSEPH HUMIJHRIES.

Witnesses:

JOHN W. Garon,

JAivrEs S. GRINNELL. (13)

